d-6a=-a

Solution for d-6a=-a equation:

Simplifying
d + -6a = -1a

Reorder the terms:
-6a + d = -1a

Solving
-6a + d = -1a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add 'a' to each side of the equation.
-6a + a + d = -1a + a

Combine like terms: -6a + a = -5a
-5a + d = -1a + a

Combine like terms: -1a + a = 0
-5a + d = 0

Add '-1d' to each side of the equation.
-5a + d + -1d = 0 + -1d

Combine like terms: d + -1d = 0
-5a + 0 = 0 + -1d
-5a = 0 + -1d
Remove the zero:
-5a = -1d

Divide each side by '-5'.
a = 0.2d

Simplifying
a = 0.2d